Simulation of flame-dynamics of a premixed swirl injector in a model gas turbine engine

Hong Gye Sung, Shih Yang Hsieh, Vigor Yang

Research output: Contribution to conferencePaperpeer-review


A comprehensive numerical analysis has been conducted to study the combustion dynamics of a lean-premixed swirl injector in a model gas turbine engine. The analysis treats the conservation equations in three dimensions, and takes into account finite-rate chemical reactions and variable thermophysical properties. Turbulence closure is achieved using a large-eddy-simulation (LES) technique. The governing equations and the associated boundary conditions are solved by means of a semi-implicit Runge-Kutta scheme along with the implementation of the message passing interface (MPI) parallel computing architecture. Results from the study of a non-reacting swirling flow indicate reasonable agreement with experimental data in terms of both the time-averaged velocity components and turbulence quantities. The unsteady turbulent flame dynamics are carefully simulated so that the oscillatory combustion behavior can be characterized in detail. Good agreement with experimental data is observed in terms of acoustic properties and flame evolution. Several mechanisms responsible for driving combustion instabilities have been identified and quantified. In addition, the basis modes of the unsteady turbulent flame are characterized using a proper orthogonal decomposition (POD) analysis.

Original languageEnglish
Publication statusPublished - 2000
Event38th Aerospace Sciences Meeting and Exhibit 2000 - Reno, NV, United States
Duration: 2000 Jan 102000 Jan 13


Other38th Aerospace Sciences Meeting and Exhibit 2000
Country/TerritoryUnited States
CityReno, NV

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering


Dive into the research topics of 'Simulation of flame-dynamics of a premixed swirl injector in a model gas turbine engine'. Together they form a unique fingerprint.

Cite this